Undefined array key “action”

I see a lot of such warnings in my error log file. Server has PHP 8.3.6

PHP message: PHP Warning: Undefined array key "action" in ../wp-content/plugins/http-requests-manager/http-requests-manager.php on line 2959

possibly changing the line to

$return = strtolower(sanitize_text_field($_REQUEST['action'] ?? ''));

can fix it?